package com.yc.fruitmarket.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebFilter(filterName="characterFilter", value="/*")
public class CharacterFilter implements Filter {

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		
		req.setCharacterEncoding("utf-8");
		resp.setCharacterEncoding("utf-8");
		//执行过滤
		//通过过滤链，将请求传递到下一个过滤器，或者，让请求成功往下执行
		//如果不写这句话，那么，请求，将一直卡在这里
		chain.doFilter(req, resp);
	}

}
